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I. B. 'STRIGKLER.

HAY'ELEVATOR AND CARRIER.

Patented June 19, 1883.

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' HAY ELEVATOR AND CARRIER. Patented June 19,1883

UNITED STATES PATENT ()FFIQE.

FRANK B. STRIOKLER, or JANESVILLE, Wisconsin,- ASSIGNOR or Two- THIRDS TO ETER e. STRTOKLER'ANDLUGIUS MILES, on SAME PLACE.

(HAY ELEVATOR AND CARRIER.

SPECIFICATION formingpart of Letters Patent No. 279,889, dated Junef19, 1883.

Application filed May 15, 1893. (No model.)

To all whom, it may concern:

Be it known that I, FRANK B. STRICKLER, of J anesville, in the county of Rock and State of \Visconsin, have invented certain new and uset'ul Improvements in Hoisting Apparatus and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in the art to which it pertains to make and use the same. My invention relates to locks for hoisting apparatus, the object being to provide devices adapted to automatically lock hoisting-tackle to a movable carriage, the latter being held stationary while the hoisting-tackle is being raised, and released simultaneously with the locking of the tackle to the carriage. The device is also adapted to automatically releasethe hoisting-tackle and support the carriage in a stationary position while a new load is being raised. i The invention consists in the combination, with pivoted jaws or catches, of a key or wedge so constructed and arranged as to hold the jaws apart, ready for locking, and adapted to drop 2 5 between said jaws to secure them in locked position. A

Y The invention further consists in the combination,with a removable carriage, of jaws pivotally secured thereto, a gravity wedge or key 0 adapted to set and lock said-jaws, and a camplate upon which said key moves.

The invention further consists in the features of construction and combinations of parts hereinafter fully described, and pointed out in the 3 5 claims.

In the drawings, Figure 1 represents a side elevation of my improvement, one side of the removable carriage being removed. Fig. 2 is a transverse vertical section of the same, and

0 Figs. 3 and 4 illustrate parts detached.

A represents a rail or beam upon which the carriage 13 travels, said carriage having wheels 0 O and the depending body portion D.

Upon one side of the body D of the carriage 4 5 is mounted asmall pulley or equivalent device,

d, to which is secured one end of a hoistingrope, E. This rope passes around the sheave f of the tackle F, and then over a frictioapulley, f, mounted on asuitable arbor, f on the opposite side of the carriage-body. The upper end of the tackle F is formed with a loop, f

G represents a cam-plate rigidly secured to the under side o't'the rail A. This cam-plateis formed on each side with two inclined grooves, 9, adapted to receive inwardly-projecting lugs h h of the wedge H. This wedge or key H is formed with an elongated slot,h, through which passes a bolt, lit, which secures thekey to the carriage. The lower portion of the key H is preferably rectangularinform, and is adapted to rest between the upper notched ends, i, ot' the pivoted jaws or catches I I. The latter are secured upon pivot-boltsj j oi'the carriage, and are inwardly curved at their lower ends and provided at or near their centers with inwardlyprojecting curved arms J J. These arms J are arranged to overlap and move in contact with each other, and each jaw I is recessed at the point i to receive the end of the arm J of the opposite jaw. The lower ends, 71, of the jaws are oppositely beveled to permit of their overlapping when brought together.

The device as thus constructedis designedto operatein the following manner: The position of the parts before the tackle F is locked will 7 be as shown in full lines, Fig. 1, the key H resting at the highest point on the cam-plate G, and the notched ends i '13 of the jaws I I engaging the lower end of the key. The carriage is thus held stationary, and when the tackleis So raised its looped upper end, f will strike the arms J J of the jaws, thus forcing them up and causing the key to descend upon the incline of the cam-plate and drop between the jaws to rest upon said arms, as seen in the dotted lines of 8 5 Fig. 1. The tackle is thus automatically locked to the carriage, which latteris then free to move upon the rail A, as the key H which secures it must descend upon the inclined grooves of the canrplate by the force of the contact of the 0 tackle with the jaws to effect the locking. After the load carried by the tackle has been discharged, thecarriage is moved back upon its rail until the lugs of the key 11' again come in contact with the highest point of the cam 5 grooves of the plate G, when said key willbe raised, thus automatically allowing the jaws I I to separate to release the tackle and resting the carriage until another load is raised.

It will be apparent that my improvement is applicable to hoisting apparatus of all kinds, and that the same is susceptible of many modifications in its form and construction. Hence I do not restrict myself to the precise construc tion herein described and shown; but I desire it to be understood that I expressly reserve to myself the right to make all such alterations in the details of form and construction as properly fall within the scope of my invention.

Having fully described my invention,what I claim as new, and desire to secure by Letters Patent, is

1.- In a hoisting apparatus, the combination, with pivoted jaws or catches, of a key or wedge constructed and arranged substantially as described,whereby the jaws are held apart to receive the tackle, said key being adapted to drop between said jaws to effect an automatic locking of the tackle, substantially as set forth.

2. In a hoisting apparatus, the combination, with amovable carriage, of twojaws or catches pivotally secured thereto, a gravity wedge or key arranged above said jaws, and a hoisting tackle adapted to strike said jaws to drop the wedge or key between the latter to lock the tackle thereto, substantially as set forth.

3. The combination, with a rail. or way, and a carriage adaptedto travel thereon, of a tackle and means, substantially as described,whereby the carriage is held stationary, and the tackle locked to the carriage automatically, and the tackle is unlocked and released simultaneously, substantially as set forth.

4. The combination,with a rail. or way provided with a plate formed with cam-grooves, of a movable carriage having wheels adapted to travel on said way, a slotted key having lugs adapted to enter said cam grooves, and twoj aws pivotally secured to said carriage below the key, and a hoisting-tackle adapted to be automatically locked by said jaw and key by contact with the latter, substantially as set forth.

5. The combination, with a track or way having a cam-plate secured thereto, of a carriage adapted to travel on said way, a hoisting-rope secured at one end to said carriage and passing around the sheave of a tackle-block and then over a friction-pulley mounted within the carriage, pivoted jaws or catches secured within the carriage and having inwardly-proj eetin arms and inwardly-curved ends, and a key or wedge havi ng lu adapted to enter the grooves of the cam-plate, and having an elongated slot through which a fasteningbolt passes, said key bein adapted to engage the notched upper ends of the jaws and be dropped between said jaws to allow the latter to grapple the hooked end of the tackle-block, substantially as set forth.

6. In ahoisting apparatus, the combination, with a carriage, gravity-wedge, and tackle, the

latter being provided with a looped end, of

pivoted jaws whose upper ends are notched to engage said key, and whose lower ends are beveled, said jaws having inwardly projecting arms which receive the thrust of the tackle, and upon which the key rests when the tackle is locked, 'substanti ally as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

FRANK B. STRICKLER.

Vitnesses:

A. (l. Barns, L. E. Mites. 

